Since about 12 hours, We have new SeaMonkey mochitest failures. Between the working and failing tests, the comm-central revision didn't change, but the Mozilla one did:
Mac
Bad - moz:2dcce82f9d66
OK - moz:71f62ccea457
Linux
Bad - moz:2dcce82f9d66
OK - moz:808fef7b978d
Windows
Bad - moz:2dcce82f9d66
OK - moz:808fef7b978d
mochitest-plain-2 has 10 new failures,
mochitest-plain-4 has 1,
mochitest-plain-5 has 36.
And those appear on all platforms.
http://hg.mozilla.org/comm-central/rev/ad50e0b068f8 might just have fixed it, in that case, bug 564724 was the cause.
Marking as such for the moment, if this has been fixed, we can mark it as such, else we need to investigate more.